243925 has 12 divisors (see below), whose sum is σ = 330336. Its totient is φ = 177200.

The previous prime is 243917. The next prime is 243931. The reversal of 243925 is 529342.

It is a happy number.

It is not a de Polignac number, because 243925 - 2³ = 243917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169 + ... + 718.

It is an arithmetic number, because the mean of its divisors is an integer number (27528).

2²⁴³⁹²⁵ is an apocalyptic number.

243925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243925 is a deficient number, since it is larger than the sum of its proper divisors (86411).

243925 is a wasteful number, since it uses less digits than its factorization.

243925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 903 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 243925 is about 493.8876390435. The cubic root of 243925 is about 62.4815945804.

The spelling of 243925 in words is "two hundred forty-three thousand, nine hundred twenty-five".